Genomics Company Selects Zayo for Dark Fiber and Wavelengths

Zayo positioned to meet infrastructure demand in emerging sector

BOULDER, Colo. – December 20, 2016 – A personal genomics company has selected Zayo for dark fiber and wavelength connectivity. The solution leverages Zayo’s existing fiber network, including dense metro fiber in a major West Coast market.

Over the past five years, advances in DNA sequencing technology have made genomic analysis more efficient and cost effective. As a result, genomics is beginning to be used more widely for personalized treatment. Because every sequenced genome requires extensive computational resources and generates large amounts of data, the bandwidth and infrastructure requirements are substantial.

To accommodate the customer’s growing volume of data, Zayo will provide a dark fiber connection between the company’s headquarters and data center, along with secure, high-bandwidth wavelength connectivity among satellite offices, headquarters and the data center. The transaction represents one of Zayo’s first major sales in this nascent global market, which is expected to exceed $22 billion by 2020, according to Grand View Research.

“Our dark fiber provided a significant competitive advantage in winning this business in an exciting and rapidly expanding market,” said Chris Morley, Zayo’s chief operating officer. “The customer required a solution that could scale to accommodate continued growth, and also wanted the flexibility to use and manage their own equipment. We’re well positioned to provide them both dark and lit services that meet their specific needs — and, more broadly, to meet the growing communications infrastructure demand in this emerging sector.”

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications infrastructure services, including fiber and bandwidth connectivity, colocation and cloud services to the world’s leading businesses. Customers include wireless and wireline carriers, media and content companies and finance, healthcare and other large enterprises. Zayo’s 114,500-mile network in North America and Europe includes extensive metro connectivity to thousands of buildings and data centers. In addition to high-capacity dark fiber, wavelength, Ethernet and other connectivity solutions, Zayo offers colocation and cloud services in its carrier-neutral data centers. Zayo provides clients with flexible, customized solutions and self-service through Tranzact, an innovative online platform for managing and purchasing bandwidth and services. For more information, visit zayo.com.

Forward Looking Statements

This press release contains a number of forward-looking statements. Words, and variations of words such as “believe,” “expect,” “plan,” “continue,” “will,” “should,” and similar expressions are intended to identify our forward-looking statements. No assurance can be given that future results expressed or implied by the forward-looking statements will be achieved and actual results may differ materially from those contemplated by the forward-looking statements. These forward-looking statements involve risks and uncertainties, many of which are beyond our control. For additional information on these and other factors that could affect our forward-looking statements, see our risk factors, as they may be amended from time to time, set forth in our filings with the SEC, including our 10-K dated August 25, 2016. We disclaim and do not undertake any obligation to update or revise any forward-looking statement in this press release, except as required by applicable law or regulation.

About Zayo

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications infrastructure, including fiber and bandwidth connectivity, colocation and cloud infrastructure to the world’s leading businesses. Customers include wireless and wireline carriers, media and content companies and finance, healthcare and other large enterprises. Zayo’s 126,990-mile network in North America and Europe includes extensive metro connectivity to thousands of buildings and data centers. In addition to high-capacity dark fiber, wavelength, Ethernet and other connectivity solutions, Zayo offers colocation and cloud infrastructure in its carrier-neutral data centers. Zayo provides flexible, customized solutions and self-service through Tranzact, an innovative online platform for managing and purchasing bandwidth.